nodejs创建简单服务器

1、创建package.json

{
  "name": "application-name",
  "version": "0.0.1",
  "dependencies":{
    "express": "latest"
  }
}

2、创建index.js

"use strict";
let router = require('express').Router();

router.get('/', function (req, res, next) {
    console.log('index page');
    res.redirect('index.html');
});

module.exports = router;

3、创建app.js

"use strict";

let express = require('express');
let app = express();
let path = require("path");

 7 let routes = require('./index');
/**
 * 解决跨域问题
 */
app.use('*', function (req, res, next) {
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Headers", "Content-Type,Content-Length, Authorization, Accept,X-Requested-With");
    res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
    res.header("X-Powered-By",' 3.2.1');
    if(req.method=="OPTIONS") res.send(200);/*让options请求快速返回*/
    else  next();
});

app.use('/', routes);

//app.use('/', express.static(path.resolve("../") + '/static'));

module.exports = app;

4、创建www.js

"use strict";

let app = require('./app');
let port = 8888;

app.listen(port, () => {
    console.log("Listening port:" + port);
});

5、安装node模块

6、node www.js运行服务器